Report - DCE - Nationalt Center for Miljø og Energi

vents in industries and households. The main improvements in the 2011 reporting
include the following:
• Inclusion of NMVOC use and calculations of NMVOC emissions for the
time period 1990 to 1994
• Inclusion of Tobacco smoking and Combustion of Charcoal for Barbeques
in Other Product Use
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Compared with the previous NH3 and PM emissions inventory (submission
2011), some changes and updates have been made. These changes cause a
decrease in the NH3 emission (1985 – 2009) and a decrease in the PM emission
(2000 – 2009).
Emission of NH3 has decreased 1-3% in the period 1985-2009 compared to
the submission 2011. The main reason for the decrease is an adjustment of
emission factors for synthetic fertilisers. The emission factors have been updated
in cooperation with the Danish Plant Directorate.
The PM emission decreases because a technical error in the calculation of
PM from animal husbandry has been corrected.
The calculation of number of produced bulls has been changed to being
based on slaughtering data from Statistics Denmark instead of annual census.
An error in the calculation of number of weaners and fattening pigs has
been corrected. Furthermore, the time series of the distribution of animals on
deferent housings types have been reviewed by experts. These changes in
activity data have influence on both NH3 and PM emissions.
The emission of NMVOC from crops has been recalculated for 2009 because
of new data for agricultural land from Statistics Denmark.
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Changes have been made to the methodology of accidental building and vehicle
fires. For accidental building fires, the different building categories
now also include additional buildings (sheds, greenhouses etc.) and container
fires. Also there are now four damage categories; full, large, medium
and small scale fires, corresponding to 100, 75, 30 and 5 % damage rate, respectively.
The effect of these changes is a decrease in emissions between 4-9
% for particles and 44-47 % for NMVOC. Even though the number of included
building fires is higher in this year’s inventory, the total emissions
are lowered. In earlier years buildings like carports, sheds and greenhouses
were categorised as detached houses and emissions from these fires were
calculated based on average floor space and content masses that were much
too high. The addition of the category additional buildings is the main reason
for the lowered total emissions from accidental building fires.
For accidental vehicle fires, similar changes were made. Last year the damage
rate was set to 70 % for all fires, but this year the damage rate was divided
in four damage categories according to the measure of fire extinguishing;
full, large, medium and small scale fires, corresponding to 100, 75, 30
and 5 % damage rate, respectively. These new damage categories give an
average burnout for all vehicle categories in 2007-2010 of 34 % and thereby a